13228220938845 has 16 divisors (see below), whose sum is σ = 23089258366272. Its totient is φ = 6413682879360.

The previous prime is 13228220938841. The next prime is 13228220938859. The reversal of 13228220938845 is 54883902282231.

It is not a de Polignac number, because 13228220938845 - 2² = 13228220938841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13228220938841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40085517832 + ... + 40085518161.

It is an arithmetic number, because the mean of its divisors is an integer number (1443078647892).

Almost surely, 2^{13228220938845} is an apocalyptic number.

13228220938845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13228220938845 is a deficient number, since it is larger than the sum of its proper divisors (9861037427427).

13228220938845 is a wasteful number, since it uses less digits than its factorization.

13228220938845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80171036012.

The product of its (nonzero) digits is 13271040, while the sum is 57.

The spelling of 13228220938845 in words is "thirteen trillion, two hundred twenty-eight billion, two hundred twenty million, nine hundred thirty-eight thousand, eight hundred forty-five".